The help for "series" says " In the context of a genr formula, existing variables must be referenced by name, not ID number." but using the id of a series is possible with other commands like "print". Is there any possibilities to generate a series from the ID's? <hansl> open andy.gdt print 1 # the help for "series" says " In the context of a genr formula, existing variables must be referenced by name, not ID number." # but using the id of a series is possible with other commands series test= sales - price # so isn't it possible to have something like # series test2 = id[1]-id[2] print test print 4 <hansl> Best regards, Mihai